Trans-Rotary Magnetic Gear for Wave Energy applicaion

This paper proposes a new device named Trans-Rotary Magnetic Gear (TROMAG) for use in Wave Energy Conversion (WEC) systems. With very low speed and high force being the main characteristics of the linear motion delivered by several types of WEC systems, the required linear machines to resist such motion have so far turned out to be bulky and cumbersome. To enable deployment of tried-and-true low torque rotary machines, it is necessary to develop a magnetic device to convert such motion to high speed, low torque rotation in a reliable and efficient way. The TROMAG does the conversion through a magnetic field and with high force density. Structure of the device, as well as its main operating characteristics is presented here. Results are obtained by Three-Dimensional (3D) Finite Element Analysis (FEA).